Pilot, who spearheaded the campaign on the ground in Rajasthan where bypolls were held in two Lok Sabha constituencies and one Assembly seat, said the election results had sent out a message to the BJP that its "jumlebaazi" (rhetoric) would not work.
He said the results had come at a time when the BJP was on the "back foot".
The Congress put up a strong performance in Rajasthan where its candidates wrested the Alwar and Ajmer Lok Sabha and Mandalgarh Assembly seats from the BJP by impressive margins last week.
Pilot, who is largely seen as the Congress's chief ministerial face in Rajasthan, said the elections were "very crucial" as they came just seven or eight months before Assembly polls in the state, slated to be held by the end of this year.
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Noting that bypolls have historically been won in the state by the ruling dispensation, Pilot said the mandate that the Congress received was not just a rejection of the Vasundhara Raje government but an approval of the Congress's stand on various issues and policies.
"The myth that the BJP is an election-winning machine and cannot be defeated at the hustings at the booth level, that myth has been put to rest now.
Asked whether the Congress would name a chief ministerial candidate before the polls in Rajasthan, Pilot said, "We as a party have traditionally not done this. The BJP takes pride in doing this but have not done it in Rajasthan."
"In our party, the elected MLAs will decide and the leadership will decide who will form the government. The singular job at our hand is to win the state elections. Collective efforts of all leaders are towards that," he said.
The margin of victory registered by the Congress had been striking with its candidate Karan Singh Yadav trouncing his nearest BJP rival Jaswant Yadav by 1,96,496 votes in Alwar, and the main opposition party's nominee for Ajmer Raghu Sharma beating BJP's Swaroop Lamba by over 84,414 votes.
The Congress's Vivek Dhakad won the Mandalgarh Assembly seat, defeating his nearest BJP rival Shakti Singh Hada by nearly 13,000 votes.
Asked if the mandate was against the Raje government or the BJP-led government at the Centre, Pilot said, "You cannot segregate. This is a mandate against the BJP."
He also alleged the BJP attempted to polarise the polls and divert the campaign discourse from the main issues.
"I must salute the people of Rajasthan that they did not allow this communal and venomous politics to take centre-stage ... The BJP's desperate attempt at the fag end to communalise (the bypolls) came a cropper," Pilot said.
He pointed out there were eight Assembly segments in each parliamentary seat and the Congress won all the eight in Alwar and in Ajmer.
"With this victory on our shoulders we are going to work double hard and with more humility reach out to the people of Rajasthan and do a mass contact programme, so that we are able to get the blessings (of the people) eight months later," he said.
Pilot claimed the tide was turning against the BJP and hailed Congress president Rahul Gandhi for taking on the BJP aggressively.
"Every statement Mr Rahul Gandhi makes at least 15 ministers start challenging that, which shows the nervousness in the BJP camp at the way Mr Gandhi is attacking and aggressively campaigning," he said.